1. The Respiratory System

2. Purpose of the Respiratory System
To provide all cells in the human body with Oxygen and remove Carbon Dioxide produced as waste by each cell

3. Fact
You breathe 15 times per minutes and move 10,000L of air in and out of your lungs each day
With every breath, you breath in at least one particle of air that Gandhi breathed in when he was alive

4. Respiratory System Structure

5. Inside the trachea and bronchi are cilia
Respiratory System
Inside the trachea and bronchi are cilia
mucus traps bacteria and dirt from the air

6. Parts of the Respiratory System
Lungs – Provides a place for gas exchange to take place
Trachea – Connects the mouth and lungs
Pharynx – Provides a pathway for both food and gases to reach their appropriate places
Alveoli – Thin sacs which allow gas to pass into the blood stream
Capillaries – Allows the exchange of oxygen for carbon dioxide
Bronchioles – Directs air from the trachea into the alveoli

7. Tracheotomy

9. Gas Exchange
Oxygen enters lungs through the bronchioles and into the alveoli
Oxygen diffuses from the alveoli into the capillary and attaches to a red blood cell
Carbon Dioxide diffuses out into the alveoli and is breathed out
Capillaries are so narrow only one blood cell can go through at a time
Boundary of alveoli is only two cells thick

10. Carbon Monoxide Poisoning
When we breathe in Carbon monoxide, it takes the place of oxygen on the red blood cells
Since RBC’s cannot carry oxygen, the tissues in the human body start to malfunction
The brain relies on oxygen and is one of the first organs affected
You will feel nausea, head aches, loss of consciousness and more

11. Breathing You breath without having to ask your body to do so
If you hold your breath too long, when you fall unconcious, your body will start to breathe again

12. Control of Breathing
Breathing is mostly involuntary
The brain controls breathing
carbon dioxide builds up in the blood, a signal goes to the brain, the brain sends a message to your lungs to breath

13. Respiratory Diseases
Diseases that reduce the flow of air into and out of lungs
Asthma: airway swelling and mucus production
Emphysema: the tiny air sacs in the lungs collapse, less oxygen can reach the blood
Chronic Bronchitis: the tissue in the airway swell